Sengmany, Stephane published the artcileSelective mono-amination of dichlorodiazines, Formula: C9H12ClN3, the publication is Tetrahedron (2015), 71(29), 4859-4867, database is CAplus.
3,6-Dichloropyridazine, 4,6-dichloropyrimidine, 2,4-dichloropyrimidine, and 3,5-dichloropyridazine underwent chemoselective monosubstitution reactions with amines using triethylamine as a base in ethanol at either ambient temperature or reflux to give monoamino monochloro pyridazines and pyrimidines. The methodol. is general and efficient despite noticeable differences in reactivity between diazines; while dichloropyridazine and dichloropyrazine require several hours of heating at reflux for the reaction to proceed, dichloropyrimidines reach completion within minutes at room temperature
Tetrahedron published new progress about 343856-62-2. 343856-62-2 belongs to pyrazines, auxiliary class Pyrazine,Piperidine,Chloride, name is 2-Chloro-6-(piperidin-1-yl)pyrazine, and the molecular formula is C15H23BO2, Formula: C9H12ClN3.
Referemce:
https://en.wikipedia.org/wiki/Pyrazine,
Pyrazine | C4H4N2 – PubChem